Combined advertising device and street-indicator



J. A. GREEFI'. COMBINED ADVEIII'ISIIIG DEVICE AND STREET INDICATOR.

I M G g M @v 3N 5w 2%3551 fiizg hfimimww sw @Q 05 m% 99 5Q wh $6 j-wwzor Johm/Z Greer J. A. GREER. COMBINED ADVERTISING DEVICE AND STREET INDKCATOR,

APPLICATION FILED AUG-H, 1919.

Patented June 21, 192L 5 SHEETS-SHEET 2.

J. A GREER.

w COMBINED ADVERTISING DEVICE AND STREET iNDICATOR.

.W' awfifli b L 93 111. LM 2% u n mu d5 .m n a P APPLICATION FILED AUG-11,1919.

J. A. GREER.- COMBINED ADVERTISING DEVICE AND STREET INDIGATQB.

APPLICATION FILED AUGJI, I9I9.

Patented June 21, 19219 5 SHEETS-SHEET 4 magma.

v F/wmza" John/J8. dime/r i. A. GHEER.

COMBJNED ADVERTISING DEVfCE AND STREET INDICATOR.

APPLICATION FILED AUG. 11, 1919.

Patented June 21, 1921 5 SHEETS-SHEET 5- kz/erjor Jmfl. Greer @a u mum UNITED STATES PATENT OFFICE.

JOHN A. GREER, OF CHICAGO, ILLINO IS.

Specification of Letters Patent.

Patented June 21,1921.

Application filed August 11, 1919. Serial No. 316,822.

T 0 all whom it may con Gem:

Be it known that 1, JOHN A. GREEK, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful Improvements in Combined Advertising Devices and Street-Indicators, of which the following is a specification.

This invention relates to a combined advertising device and street or station stop indicator of the electrically actuated type for passenger vehicles, such as street cars, elevatedcars, railway cars, and the like.

Among the objects of my invention is to improve the construction of devices of the type mentioned, in the several particulars as will hereinafter more fully appear, and to provide in particular: First, an electrically actuated device which may be operated by the current supplied to the passenger car on which the device is installed, and thus avoid the use of two separate sources of current supply, one for the device and the other-for the car; second, to operate the advertising part of the mechanism independently of the street indicating part, so that the former may operate continuously and be made to change with much more, frequency than the street indicator; third, to provide solenoids for operating the webs of the advertising and street indicating parts of the mecha nism, so that the webs may be moved intermittently and thus have stationary periods for properly displaying the data marked thereon: fourth, to provide an electrically actuated brake for the rolls and thus hold. them against rotation when-the web or sheet is to be held stationary; and, fifth, to provide an improved form of cut-out switch between the source of current supply and the operative parts of m device to prevent destructive arcing when t e switch is thrown for cutting off the current of the device.

Other and further objects of my invention will appear from the following description taken in connection with the accompanying drawings, in which- Figure 1 is a. front elevational view of a combined advertising device and street indicator constructed in accordance with my invention, the front wall of the casing in which the parts are located being omitted for the purposes of illustration;

Fig. 2 is an elcvational view of one end of the device and showing the solenoids employed for turning the rolls;

F 1g. 3 1s a vertical sectional view, taken on hne 3-3 of Fig. 1;

I Fig. is an enlarged fragmentary elevational viewshowing the member on the rackbar used with the solenoid of the advertising part of the device and in a position operatmg a movable contact member of the mechanlsm';

Fig. 5 is a top plan view of the parts shown in Fig. 1;

Fig. 6 is a perspective View of one of the spring con-tact fingers of the advertising part of the device and showing the perfora-- tion 1n the web or sheet, through which said contact-finger engages the metal guide bar behind the sheet for the purpose to be herelnafter mentioned;

F 1g. Tis a side elevational View of one of the electrically operatedbrakes for each set of rolls used in the device;

Fig. 8 is a front elevational view of a detail of construction to be hereinafter described in detail;

Fig. 9 is a vertical sectional view taken on the indirect line 99 of Fig. 5;

Fig 10 is a diagrammatic view showin the w1r1ng system of the entire device; and

F igs. 11, 12, and 13 are views of the manually operable switch of the street indicator.

As shown in the drawings, a combined advertising device and street indicator of my lnvention comprises a supporting member 1 placed substantially upright when the device is in use and forming therear or back wall of the casing (not shown) in which the parts of the mechanism are housed and protected. From one side of said back 1 project brackets;.;2, 2, laterally spaced apart and vertically arranged and secured to said back 1 by fastening members 3 extending through base flanges4 on said brackets, as shown in Fig. 5. Rotatably mounted between said brackets 2, 2 are a plurality of horizontally arranged rolls 5, 6, 7. and 8, the ends of the shafts of which being journaled in bearings 9, 9 on said brackets. As indicated in Fig. 3, the rolls are in substantially vertical alinement. The ones 5, 6, constituting the upper set, are for the advertising part of the device, while the rolls 7 8 form the lower set and arefor the street indicator part of the device. Extending between the brackets, in front of the rolls, are a plurality of metal bars 10, 11, 12, 13, horizontally arranged and having their ends secured to the brackets by clamp nuts 14. The bar 10, as shown in Fig. 3, is above the longitudinal axis of the roll 5, while the bar 11 is a considerable distance below the roll 6 but above the roll 7. The bar 12 is below the longitudinal axis of the roll 7 but above such axis of theroll 8, and the bar 13 is below such axis of the lowermost roll 8. For the upper rolls 5, 6, there is aweb 15 having a width substantially equal to thelength of the rolls and to be wound from one to the other. The ends of said web are secured to said rolls in a manner permitting the web to be removed from the rolls and replaced by another one, when it is desired to change the advertising dislay of the device, or the rolls 5 and 6 may iiave removable connection with the brackets 2, 2 for that purpose. The web 15 may be made of any suitable material, such as paper or cloth, and is trained outward from the roll 5 to and over the bar 10 and downto and under the bar 11 and back to the roll 6. The bars 10,11 are in substantially tance sufiicient to provide a stretch of web of such length to exhibit effectively a proper amount of advertisin or other matter marked thereon for disp ay, as shown in Fig. 1. The rolls 5, 6 are rotated to bring the various advertising matters on the Web 15 into position between the bars 10,11 to be displayed or exposed to view thro-ug a window or sight opening (not shown) provided in the front wall of the casing or housing of the device. When the rolls 5, 6 are rotated-the web 15 is wound on one roll from the other, there being suitable electrically actuated mechanism, forming part of my in- Vention and to be presently described, for rotating the rolls intermittentlyfor bringing the advertising sections of the web into View between the bars 10 and 11, and also for reversing the direction of rotation of the rolls just before the end 'of the web connected with the roll from which it is being unwound is. reached, and thus preventing the web from being completely unwound from either roll.

For the lower set of rolls 7, 8, there is a Web 16 having its ends secured to said rolls in substantially the same manner as the web 15 issecured to its rolls 5, 6, so that said web 16 may be removed from it rolls and replaced by another when it is desired to display a different set of street names or station stops, as required when changing the device from one passenger vehicle having one route to another having a different route, or when the vehicle is to run over a different route. As in the case of the advertising mechanism, the rolls 7, 8 may have removable -connection with the brackets 2, 2 for this purpose. The web 16 has a width substantially equal to the length of the rolls 7, 8, and may be made of any suitable material, such as paper or cloth, and is trained outward from the roll 7 down to and over the bar 12 and down to and under the bar 13 and back to the roll 8. The bars 12, 13 are also in vertical alinement to cause the portion of the web 16 extending therebetween to be vertically straight, and said bars are spaced apart a distance sufiici'ent to provide enough space on the portion of the web between them to allow a station or street name to be printed or otherwise marked thereon in such size as to be readily and easily seen through another window or sight opening in the front wall of the casing of the device, as shown in Fig. 1.

For rotating the rolls and moving the webs across the windows in the front wall of the casing and thus bring the various advertisements and street or station names on the webs into view from time to time, I provide the following mechanism.

Secured to one of the brackets 2, on the outer side thereof, are two solenoids 17, 18, one for each set of rolls. As shown in Fig. 9, the solenoid 17 for the rolls 5, 6 of the advertising web 15 is provided with a core 19 movable within the solenoid and endwise thereof. To said core 19. is secured a rackbar 20 extending above the solenoid and provided on one side with rack teeth 21 mesh ing with a gear pinion 22 fixed to a shaft 23' j ournaled in and extending through said bracket 2. Said rack-bar 20is held 1n mesh with the gear pinion 22 by a roller 24 journaled on said bracket 2 and bearing a ainst one edge of the rack-bar, as shown. 0 the end of the shaft 23, inside of the bracket, is fixed a gear wheel 25 meshing with a gear wheel 26 fixed to the shaft 27 of the upper roll 5. Also on said shaft 27 is a gear wheel 28 meshingwith a gear wheel 29 fixed on the shaft 30 of the roll 6. The gear wheels 28, 29 have the same diameter so that the rolls 5, 6 will be rotated at the same rate'of speed. Secured to the inner face of each gear wheel 28, 29 are a plurality of electromagnets 31, 32, projecting toward the opposed end of the associated rolls 5, 6, such ends of the latter having metallic disks 34, 35, which rotate therewith. The electromagnets 31 are for the upper roll 5 and when energized clutch the gear wheel 28 to said upper roll, and when gear wheel 28 is rotated by the rack-bar 20 moving upward, the roll 5 will be turned in a direction to wind the web 15 thereon. The electro-m'agnets 32 for the lower roll 6 are deenergized at the time, thereby effecting no clutching of the roll 6 to the gear wheel 29 and permitting said roll 6 to revolve freely in the unwinding of the web therefrom. On the other hand, when the electro-magnets 32 are energized, the ones 31 are deene'rgized, and

said magnets 32 clutch the roll 6 to the gear wheel 29, and thus in the upward movement of the rack-bar 20 power is applied to the lower roll 6, revolving the same and winding the web 15 thereon from the upper roll 5, which at such time is free to revolve for that purpose. The turning of the rolls is effected only during the upward movement of the rack-bar 20, the current to the electrical parts of the mechanism being out 01f during the downward movement of the rack-bar, thus the web 15 is stationary at that time and the advertising matter on the section between the guide bars 10, 11 displayed during the time that the rack-bar is moving downward to its starting position. In this manner the several advertising sections into which the length of the web is divided are brought into view betweenthe bars 10, 11 in succession and in the order in which they are printed or otherwise marked on the web. hen winding the web 15 on the upper roll 5, current is supplied during the upward movement of the rack-bar 20, the electromagnets 31 being energized for clutching said roll 5 with the main operative parts of the mechanism, but as soon as the rackbar reaches the limit of its upward movement, the current is cut off by electrically operated means, thereby de'elnergizing the solenoid 17 and-the electro-magnets 31 and permitting the rack-bar 20 to descend to its starting point or lowermost position by gravity and at the same time turning the gear wheels 28, 29 and the electro-magnets thereon, but without rotating the rolls 5, 6. When the rack-barhas reached its starting position, the solenoid 17 and electro-magnets 31 are again energized so that the roll 5 will again be rotated to wind the web 15 thereon in the upward movement of the rack-bar and thus bring the following advertisement on the web into view. This cycle of movements is continued until the web has been nearly unwound from the roll 6, thereupon the direction of movement of the rolls is changed by allowing the electromagnets 32 for the lower roll 6 to be energized during each upward movement of the rack-bar, instead of the electro-magnets for the roll 5. Thus the web will be rewound. on the roll 6 in the same manner as it was wound on the roll 5. Just before the end of the web connected with the r0115 is reached, the direction of movement of the web is again changed and winding again on the roll 5 repeated. This continues as long as current is supplied.

Cutting off the current to accomplish these results is effected in the following manner. Cut in the web 15, between each advertising section thereof, is a hole; or aperture 35*. The apertures are in alinement. lengthwise of the web and positioned in the center of the same. Extending between the brackets 2, 2 is a rod 36 horizontally arranged and in substantially vertical alinement with the guide bars and positioned between the ones 11 and 12, as shdwn in Figs. 1 and 3. Secured to said rod 36, at about the center thereof, is a spri g contact finger 37 extending upward tow. rd the bar 11 and bearing constantly against the portion of the web 15 passing thereover. The upper end of said finger 37 bears on the web 15 in line with the series of apertures 35 therein, and is provided at such end with 'an iinwardly bulged portion 38 to pass through the hole 35 and engage the guide bar 11 when one of said holes 35 is brought opposite such part. Said guide bar 11 is grounded on the frame 1 of the device, while the contact finger 37 is in the wiring circuit, so that when the contact finger engages the bar 11, a switch, to be hereinafter described, is operated electrically to cut off the current to the solenoid l7 and the electro-magnetic clutch being used to permit the rack-bar 20 to descend and have no turning effect on the rolls 5, 6. This operation takes place as soon as the end of each advertising section on the web 15 is reached.

For holding the rolls 5, 6 from rotating when the web 15 is stationary and the rackbar 20 is descending, and thus prevent the rolls from turning freely and loosening the portion of the web wound thereon, I provide an electrically actuated brake, as shown in Figs. 1, 5, 7, and 9. Said brake is located at the ends of the rolls 5, 6 opposite the elec tro-magnets 31, 32, and is constructed as follows. As shown in Fig. 7, each roll 5, 6 is provided at such end with a hub portion 38 having an annular groove 39 in which fits a metal brake band 40 of a length to engage about both hubs 38"-, 38. The ends of said brake band 40 extend to the rear of the rolls 5, 6, and are both'connected with the arms of a yoke 41. Said yoke is provided between its ends with an arm 42 pivoted at 110 43 on a post 44 secured to the back 1. The free end of the arm 42 is provided with an armature 45 coiiperating with the pole-piece 46 of a, solenoid 47 mounted on the back 1. The brake band 40 is trained over the hubs 38, 38 of the rolls 5, 6 and also passes about an idler roll 48 interposed between said rolls, as shown, in Fig. 7, and so positioned as to cause the band to be looped to a considerable extent about the hubs 38. A spring 49, connected with the back 1 and with the arm 42, serves to hold the arm normally out of engagement with the solenoid 47, as shown in Fig. 5, and maintains the brake band tightly about the rolls, thereby preventing the same from rotating when the web 15 is stationary. lVhen the solenoid 47 is energized, the armature 45 is attracted thereto, overcoming the tension of the spring 49 and moving the yoke 41 toward the rolls 5, 6,

thereby releasing the grip of the brake band on the rolls and permitting the same to be rotated for winding the web on one roll. The solenoid 47 is in circuit with the main operating solenoid 17 and the other electrical parts of the device, and is energized to release thebrake band from the rolls 5, 6 when the rack bar 20 starts on its upward movement and holds the brake band released during the entire upward movement of the rack bar. As soon as such movement is completed, the solenoid 47 is deenergizedby cutting off the current thereto so that the rolls 5, 6 will be held from rotation during the downward movement of the rack bar.

After the web 15 has been wound on one of the rolls (5 or 6) and all of the advertisements thereon have been displayed in succession, the direction of movement of the web is reversed just before the end of the web connected with the roll from which it is being unwound is reached, to prevent the web from being unwound completely from and disconnected from such roll. To accomplish this, I provide on the rod 36 two spring contact fingers 48, 48, one at each side of the web, as shown in Fig. 1. Said contact fingers 48, 48 are alike in construction and operation and extend upward to the web and bear constantly against the portion of the same passing over the guide bar 11 'and exerting the same pressure on each side of the web prevent the same from being wound unevenly on the rolls 5, 6. For each of said contact fingers 48, 48 the web 15 is provided at each side edge thereof. with a single hole or aperture 50, 50. permitting an inwardly bulged portion 51, 51", at the upper end of the contact finger, to engage the bar 11 through the aperture when the latter registers therewith. The aperture 50 on the left-hand edge of the web 15 is near the end of the web connected with the lower roll 6,

and thus permits a reversal of direction ofthe web after being wound to the extent required on the uppermost roll 5. The aperture 50 on the right-hand edge of the web is adjacent the opposite end of the web 15, that is, the end connected with the roll 5, and comes in operation after the web has been wound to the extent required on the roll 6 to reverse the movement of the web.

For cutting in and cutting ofl the current to the electrical parts described and used in connection with the advertising part of my device, I provide a main switch 52 having a stationary member 53 secured to the back-1 and provided with a plurality of resilient contact fingers 54, 54 projecting horizontally outward therefrom, as shown in Fig. 5. Located in front of said fixed member 53 is an endwise movable bar 55 having its ends in the form of cores 56, 56 of the solenoids 57, 58. one at each end of said bar. The latter is provided with a plusolenoid and brings the contact plates 59 into contact with the fingers 54, thereby cutting in the current to the device. On the other hand, when the solenoid 57 is denergized and the opposite one 58 energized, the bar 55 is moved toward the latter and moves the plates '59 out of contact with the fingers 54, thereby cutting ofi the current to the advertising part of my device. By providing a plurality of contact points on the switch 52, arcing of the switch is reduced to the minimum, and no detrimental effects produced.

. Included in the circuit with the contact fingers 48, 48 is a reversing switch 60, as shown in Fig. 9. Said switch 60 is provided with two solenoids 61, 62, oppositely arranged and between which is located a bar 63, the ends of which form cores for said solenoids. Said bar 63 is provided with two contact members 64, 65 on the same side thereof and a contact plate 66 on the opposite side and against which bears a brush 67 having a terminal 68 to which one of the conductor wires is attached. The contact members 64, 65 ar connected with the plate 66 and extend through the bar 63, which is made of insulating material. Secured in an insulating block 69 above the bar 63 are two fixed contact members 70, 71 in position to contact with the members 64, 65 in the endwise movement of the bar 63. Said contact members 70, 71 are each provided'with a terminal 72, 73, respectively, for the conductor wiresleading thereto. When the contact member 64 is in contact with the member 71, current is supplied to the electro-magnetic clutch of the roll 5. When the left-hand aperture 50 in the web 15 reaches its contact finger 48, the solenoid 61 is energized (the one 62 denergized) and the bar 63 moved toward the solenoid 61 and its contact member 65 brought in contact with the member 70, thereby energizing the electro-magneti-c clutch for the roll 6 and permitting the web 15 to be wound on said roll, thus changing the direction of movement of said web. On the other hand, the action is reversed when the right-hand aperture 50 reaches its contact finger 48 and the web wound again on the roll 5.

As soon as the rack bar 20 reaches the limit of its upward movement, the current is supplied to th solenoid 58, energizing the same and moving the switch bar 55 toward said solenoid 58, thereby cutting off the current to the solenoid 17. This is effected in the following manner. On the shaft 23 beyond the gear pinion 22 is a disk 74 of insulating material and having surrounding it a split contact ring 75, the ends of which are separated and inserted into the material of the disk to provide a gap between them. Bearing on said ring are two springpressed brushes 76, 77 having terminals 78, 78, to which are connected conductor wires. iVhen the parts occupy the positions shown in Figs. land 2, the rack-bar 20 is in its starting position, and no current is supplied to the solenoid 58 of the main switch through the brushes 76, 77, because one of them is in the gap in the ring 75 and bearing not on the ring but on the disk 74. \Vhen the rack-bar reaches the limit of its upward movement, the brushes 76, 77 both engage the ring 75 and in position to cut out the main switch 52. Secured to the rack-bar 20 at its upper end is an annular member 80 having beveled edges 81, 82, as shown in Figs. 2 and4, the former inclined downward and the latter upward. Pivoted on the back 1 is an arm 83 having at its upper end a contact member 84 to engage a fixed contact member 8:) in an insulating block 86 secured to said back. Said contact member 85 is provided with a terminal 87 for the conductor wire leading thereto. At the lower end of said arm is a cam shaped projection or lug 90 in the path of movement of the collar 80. A spring 91 is connected to the back 1 and the arm 83 and serves normally to hold the arm in a position with its contact member 84 out of engagement with the fixed contact member 85, as shown in Fig. 2.. As the rack-bar 20 moves upward, its collar 82 passes over the projection 90 and merely moves the arm 83 backward, its spring preventing it from dropping into contact with the contact member 85 when the collar passes. -When the rack bar 20 moves downward, however, its collar 80 engages the projection 90 and in passing over the same rocks the arm 83 momentarily into contact with the contact member 85, thereby completing the circuit through the supply wire 141, resistance 143, wires'145 and 146. solenoid 57, wire 147, insulated contact 85, and grounded arm 83. This energizes the solenoid 57 and throws the main switch 52 to cut in the current and start the rack-bar 20 upward again and impart movement to the rolls, 5, 6 to bring the next advertisement on the web 15 into view.

Included in the circuit of the reversing switch 60 is a disk 92 made of suitable insulating material and about which is applied a split .ring 93 having its ends separated in the same manner as the disk 74, heretofore described and fixed on the shaft 23. Spring-pressed brushes 94, 95 bear against said ring 93, and said brushes are provided with terminals 96, 96 for conductor wires.

T'o retard the descent of the rack-bar 20 and thus permit the web 15 to remain stationar a sufii'cient len th of time to display the a vertisement on t e portion of the web brought between the guide bars 10 and 11, I provide a dash pot 97 below the solenoid 17 and in which reciprocates a piston 98 connected with the core 19 by a rod 99.

For turning the rolls 7, 8 of the street indicator, I provide the main solenoid 18 having a core-piece 101 movable endwise thereof and connected with a. rack-bar 102 having rack teeth 103 on one side thereof. Said solenoid 18 is vertically arranged and secured to the same bracket 2 to which the other solenoid 17 is attached. The rack-bar 102 extends downward below the solenoid 18 and its rack teeth mesh with a gear pinion 104 (Fig. 2) fixed to a shaft 105 journaled in the bracket 2 below the solenoid, as shown in Fig. 2. Said shaft 105 extends through said bracket-and is provided at its inner end with a gear wheel 106 meshing with a gear wheel 107 on the shaft 108 of the roll 8. The shaft of said roll 8 is provided with a gear wheel 109, which meshes with a gear wheel 110 on the shaft 111 of the roll 7. For holding the rack bar 102 in mesh with the gear pinion 104, there is a roller 112. The gears 109, 110 hate the same diameter so that the rolls 7 8 are rotated at the same rate of speed. On the side of the gear wheel 110 facing the roll 7 are a plurality of electro-magnets 112"",112 designed when energized to engage a metal disk 113 fixed on the end of the roll 7. On the same side of the gear wheel 109 are a plurality of electro-magnets 114, 114, which when energized engage a metallic disk 115 on the end of the roll 8. By such construction, there is an electro-magnetic clutch for each of the rolls 7 8 and operated in the same manner as the electro-magnetic clutches for the rolls 5, 6 of the advertising mechanism. For the rolls 7, 8 there is an elec trically actuated brake, constructed and operated in exactly the same way as the brake for the rolls 5, 6 and indicated in the drawings by the same reference numerals.

For cutting in and cutting 011' the current to the solenoid 18 and to the electro-magnets 112*, 114 and the other electrical parts of the street indicator mechanism, there is a switch 116 made substantially like the one 52 for the advertising mechanism. Said switch 116 has an endwise movable bar 117 provided at its end with core-pieces of the solenoids 118, 119. There are a plurality of spring contact fingers 120 to engage a like number of contact plates 121 on the bar, as shown in Figs. 9 and 10. For throwing the switch 116 and cutting 011' the current tothe solenoid 18 after the rack-bar 102 has moved upward to the fullest extent, 1 provide the following construction:

Secured to the rod 36 is a springcontact finger 122 extending downward therefrom and having its end bearing against the web 16 where it passes over the guide bar 12, which is grounded on the frame of the device. The web 16 is provided on each side of each street name or station stop marked thereon with a hole or perforation 123, the perforations being in alinement and positioned to pass between the bar 12 and the contact finger 122. "When such parts register, the contact finger engages the bar 12.

through the perforation and establishes a. flow of current, effecting the throwing of the main switch 116 and cutting off the current. so that the rack-bar 102 may descend by gravity to its starting position to repeat the operation of turning the rolls 7, 8. For retarding the speed of descent of the rackbar 102, I provide a cylinder 124 closed at its ends and in which reciprocates a piston 125 connected with the core 101 by a rod 126. The cylinder 124 extends above the solenoid 18, as shown in Fig. 2.

For starting the street indicator, 1 provide a manually operable switch 128 in position to be readily accessible by the conduc- .tor or other trainman on the vehicle from his post of duty. Said switch 128 comprises a. rod 129 movable endwise through the easing of the switch, and is provided at its ends with enlargements or buttons 130, 131, or other parts to be engaged by the hand of the operator. Extending upward from said rod 129 is an arm 132 pivoted at its lower end with said rod and at a point 133 between its ends to the casing of the mechanism. At the upper end of said arm is av cross-bar 134 to have wiping contact with two contact members 135. 136, in circuit with the main switch 116. When the parts are in the position shown in Fig. 13, the arm 132 stands to one side of and out of contact with the members 135. 136. hen the button 130 is pushed inward. the rod 129 is moved endwise and causes the arm 132 to be swung into a position at the opposite side of the contacts 135. 136, and as the cross-bar 134 passes by such contacts current is supplied from the source to the main switch 116 operating it and causes the rolls 7, 8 to be turned to bring the next street or station stop into view. As the next cross street or station stop is approached, the trainman again operates the switch 128 and the next street name is displayed. This is repeated for each cross street or station stop on the route. To hold the arm 132 against accidental movement, I provide a flat spring 137 having adjacent its free end a bulged portion 138. over which the arm moves.

Thus when the arm 132 is on either side of said .bulged part 138, the latter serves as a stop shoulder preventing the arm from moving accidentally in the opposite direction.

and street indicator, and, as shown, the source of curnent supply is, for illustrative purposes, indicated as a generator 139, to one terminal of which is connected a wire 140 and to the other terminal a wire 141. The former is grounded as shown. When the device is installed on an electric car, the current would be supplied from the trolley wire or an underground rail, depending whether the car takes its current from overhead or underground. The wire 141 is connected with one of the terminals 142 of a double resistance coil 143, which serves to reduce the high voltage of the current supplied from the generator to thatrequired to operate my device. To the opposite terminal 144 of said coil is connected a wire 145, which leads to the contact fingers 54 of the main switch 52 of the advertising mechanism. A wire 146 connects the wire 145 with one of the terminals of the electrofnagnet 57 of said switch, and from the other terminal leads a wire 147 connected with the fixed contact 85. The current passing through the wire 145 enters the solenoid 57 and energizes the same, moving the switch bar 55 toward the solenoid 57, thereby bringing the contact members 54 and 59 into contact, as shown in Fig. 10. Current flows through the contact members of the switch out through a wire 148, which is connected with one of the terminals of the main operating solenoid 17. A wire 149 is connected with the opposite terminal of said solenoid and leads to one of the terminals of the solenoid 47 of the electro-magnetic brake for the upper rolls 5, 6. A wire 150 is connected with the other terminal of said solenoid 47 and leads to the brush 67 of the reversing switch 60. \Vhen the electro-magnet 62 of said switch is energized, the bar 63 is in the position shown in the drawings, and its contact member 64 is in contact with the member 71, to which is connected a wire 151 leading to the electro-magnets 31, 31 on the gear wheel 28 of the upper'roll 5. Said magnets are grounded. Connected to the terminal 144 of the resistance coil 143 is a wire 152, which leads to the terminal 153 of the reversing switch 60, said terminal being connected with one of the terminals of the electro-magnet 62. The other terminal of said magnet is connected with the terminal 154. of said reversing switch, to which is connected a wire 155. which is connected with a wire 156 leading to the brush 95 and the terminal 157 of the reversing switch. Said terminal 157 is connected with one of the terminals of the electro-magnet 61, and the other is connected with the terminal 158 of said reversing switch. To said terminal is connected a wire 159, which leads to and connects with the wire 152. To the other brush 94 is connected a wire 160,

which leads to the right-hand spring contact finger 48 and by a wire 160 to the lefthand contact finger 48. To the other fixed contact member 70 is connected a wire 161, which leads to the electro-magnets 32 on the gear 29 of the roll 6. To the brush 76 is connected a wire 162, which leads to one of the terminals of the electro-magnet 58 of the main switch 52, and to the other terminal of said electro-magnet is connected a wire 163, which connects with the wire 145. A wire 77 leads from the brush 77 to the spring contact finger 37. Leading from the terminal 164 of the resistance coil 143 is a wire 165, which is connected with a-wire 166. The latter connects with a wire 167 leading to the fixed contact member 135 of the manually operable switch 128 rovided in the mechanism of the street indicator. Said wire 167 also connects with one terminal of the electro-magnet 118 of the main switch 116, the other terminal of the magnet being connected by a wire 168 with the other fixed contact member 136 of said manually operable switch. A wire 169 connects the wire 166 with the spring contact fingers 120 of the switch 116, and current is led therefrom when the bar 117 has been moved toward the magnet 118. through a wire 170., which is connected with a wire 171 leading from one terminal of the electro-magnet 119 of the switch 116. Said wire 171 leads to one of the terminals of the main operating solenoid 18, and a wire 172 leads from the other and is connected with one of the terminals of the electro-magnet 47 of the electro-magnetic brake for the lower rolls 7, 8. From the other terminal of the electro magnet 47 leads a wire 173 connected to a wire 174, which leads to the set of electro-magnets 112 of the clutch mechanism of the upper roll 7.

Said wire 174 leads to a contact point 175 of the manually operable reversing switch 176. To one of the other contact points 177 of said switch leads the wire 166, as shown. To the third contact point 178 of said switch leads a wire 179, which also connects with the electro-magnets 114 of the clutch mechanism of the lower roll 8.

On the shaft 105 is a disk 180 made or insulating material and surrounded by a split metal ring 181 having its ends spaced apart to provide a gap therebetween, as shown in the drawings. For said ring there are two brushes 182, 183. To the former is connected a wire 184, which leads to the spring contact member 122, and to the latter is connected a wire 185, which leads to one terminal of the electro-magnet 119.

While I have shown and described in detail a device embodying the features of my invention, it is to be of course understood that the details of construction and arrangement of parts shown may be variously changed and modified without departing from the spirit and scope of my invention.

I claim as my invention:

1. In a device of the character described, in combination, two rolls, a display web extendlng between and connected with said rolls, two rotary members, one for each roll, adapted to be driven simultaneously in opposite directions, a clutch for connecting each rotary member with its associated roll, a single solenoid for driving said rotary members, electrically actuated means in circuit with said solenoid for energizing the same and operating one of said rolls at predetermined intervals to wind theweb thereon, means in said circuit and controlled by the movement of the web for deenergizing said solenoid and disengaging the clutch from the winding roll at predetermined intervals, and means in said circuit for operating the other clutch for reversing the direction of movement of the web.

2. In a device of the character described, in combination, two rolls, a display web extending between and connected with said rolls, a gear train including two meshing gear wheels, one for each roll, and a pinion for rotating said gear wheels, a single sole: noid having a core movable endwise thereof, a rack bar moved by said core and meshing with said pinion, a clutch for connecting each gear wheel with its associated roll, electrically actuated means in circuit with said solenoid for energizing the same and operating one of said clutches to engage one of said rolls at predetermined intervals for winding the web on said roll, means in said circuit and controlled by the movement of the web for deenergizing said solenoid and disengaging the clutch from the winding roll at predetermined intervals, and means in said circuit for operating the other clutch at a predetermined point in the travel of the web for reversing the direction of movement thereof.

3. In a device of the character described, in combination, two rolls, a display web extending between and connected with said rolls, a gear train including two meshing gear wheels, one for each roll, and a pinion for rotating said gear wheels, a single solenoid having a core movableendwise, thereof, a rack bar moved by said core and meshing with said pinion, an electromagnetic clutch for connecting each gear wheel with its associated roll, electrically actuated-means in circuit with said solenoid and said clutch for energizing the solenoid and one of said nect the winding roll from the gear train,

and means in said circuit for energizing the other clutch at a predetermined oint in the travel of the web for reversing t c direction of movement thereof.

4. In a device of the character described, in combination, two rolls, a display web extending between and connected with said for connecting each gear wheel with its associated roll, electrically actuated means in circuit with said solenoid and said clutch for energizing the solenoid and one of said clutches to connect one of the rolls with the gear train at predetermined intervals for winding the web on said roll, means in said circuit and controlled by the movement of the web for denergizing said solenoid and said clutch at predetermined intervals to disconnect the winding roll from the gear train, said means including a plurality of spaced perforations in said web, a grounded metal bar .over which said web moves, and a contact finger bearing against said web and adapted to engage the bar through the perforations in said web, and means in said circuit for energizing the other clutch at a predetermined point in the travel of the web for reversing the direction of m'ovement thereof,

5. In a device of the character described, in combination, two rolls, a display web extending between and connected with said rolls, a gear train including two meshing gear wheels, one for each roll, and a pinion for rotating said gear wheels, a single solenoid having a core movable endwise thereof, a rack bar moved bysaid core and meshing with said pinion, an electromagnetic clutc carried by each gear wheel for connecting the associated roll thereto, electrically actuated means in circuit with said solenoid and clutch for energizing the solenoid and one clutch at predetermined intervals to connect one roll with thegear train for winding the web on said roll, means in said circuit and controlled by the movement of the web for deenergizing said solenoid and clutch at predetermined intervals to disconnect the winding roll from the gear train, an electrically actuated brake in the said circuit for bolding the rolls stationary when no movement is imparted thereto by said solenoid, and means in said circuit for energizing the other clutch at a predetermined point in the travel of the web for reversing the direction of movement thereof. v

6. In a device of the character described, in combination, two rolls, a display web extending between 'andco'nnected with said rolls, a gear train including two meshing gear wheels, one for each roll, and a pinion for rotating said gear wheels, a single sole noid having a core movable endwise thereof, a rack bar moved by said core and meshing with said pinion, an electromagnetic clutch carried by each gear wheel for connecting the associated roll thereto, electrically actuated means in circuit with said solenoid and said clutches for energizing the solenoid and one clutch at predetermined intervals to connect one roll with the gearl train for winding the web on said roll, means in said circuit and controlled by the movement of the web for deenergizing said solenoid and clutch at predetermined intervals to disconned't the winding roll from the gear train, an electrically actuated brake in the said circuit for holding the rolls stationary when no movement is imparted thereto by said solenoid, said brake comprising a brake band looped about both of said rolls and normally held in gripping engagement therewith, a pivoted arm to which the ends of the brake band are secured and an electromagnet in said circuit for releasing the band from the rolls; and means in said circuit for energizing the other clutch at a predetermined point in the travel of the web for reversing the direction of movement thereof.

7 In a device of the character described, in combination, two rolls, a display web extending between and connected with said rolls, a gear train including two meshing gear wheels, one for each roll, and a pinion for rotating said gear wheels, a single solenoid having a core movable endwise thereof, a rack bar moved by said core and meshing with said pinion, a clutch for connecting each gear wheel withits associated roll, electrically actuated means in circuit with said solenoid for energizing the same and operating one of said clutches to engage one of said rolls at predetermined intervals for winding the web on said roll, means in said circuit andcontrolled by the movement of the web for deenergizing said solenoid and disengaging the clutch from the winding roll at predetermined intervals, and means in said circuit for alternately operating said clutches at predetermined points in the travel of the web for reversing the direction of movement thereof including a rounded bar over which the web moves an two contact fingers bearing against said web adjacent each side edge thereof, said web having two apertures located one adjacent each end thereof to permit said contact fingers to contact with said bar.

8. In a device of the character described, two rolls, a webconnected therewith, a solenoid having acore movable endwise thereof, a rack-bar secured to said core, a train of gearing between said rack-bar and said rolls and actuated by the rack-bar when the latter is moved in one direction upon the energizing of said solenoid, a pivoted arm having a contact member, a fixed contact member on the frame of the device, a collar on said rack-bar adapted to move said arm into contact with said fixed contact member, and a switch for cutting in and cutting ofi current to said solenoid and being in circuit with said arm to be actuated when said arm contacts with said fixed contact member.

In testimony that I claim the foregoing as 10 my invention, I aflix my signature this 4th day of August, A. D.-1919.

JOHN A. GREER. 

